Neodymium Cylinder Magnet 3mm x 4mm N50
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Neodymium Cylinder Magnet 3mm x 4mm N50
Small in size yet exceptionally powerful, this Neodymium Cylinder Magnet measures 3mm in diameter x 4mm in height and is manufactured from premium N50-grade rare earth neodymium for superior magnetic strength and reliable performance. Its compact cylindrical design makes it ideal for precision applications where strong magnetic force is required in a miniature form factor.
Finished with a durable NiCuNi nickel coating, this magnet features a smooth polished metallic finish while helping protect against corrosion and wear. Magnetised through the 4mm height (axially magnetised), it delivers concentrated magnetic performance for dependable holding and positioning applications.
Its compact size makes this neodymium cylinder magnet perfect for electronics, sensor systems, magnetic closures, model making, lightweight mounting applications, engineering projects, and custom fabrication work. Whether you're prototyping products, creating intricate assemblies, or working on detailed DIY projects, this N50 cylinder magnet offers professional-grade strength and versatility.
Features & Benefits
- Premium N50-grade neodymium rare earth magnet
- Dimensions: 3mm diameter x 4mm height
- Compact cylindrical design
- Extremely strong magnetic performance for its size
- Durable NiCuNi nickel plated coating
- Magnetised through the height (axial magnetisation)
- Smooth polished silver finish
- Suitable for industrial, commercial, hobby, and DIY applications
Common Applications
- Electronics and sensor systems
- Magnetic closures and fasteners
- Model making and miniatures
- Engineering and prototyping projects
- Precision fabrication work
- Arts, crafts, and DIY applications
- Compact holding and positioning systems
- Packaging and display solutions
Please Note
Neodymium magnets are extremely strong for their size and should be handled carefully. Small magnets can present a swallowing hazard and must be kept away from children. Avoid allowing magnets to snap together forcefully, as they may chip or crack upon impact.
Typical Physical Properties
NB: Ranges are indicative for product category, please check individual products for specic values within that range.
Production Flow Diagram
Demagnetization Curves
Surface Treatment
The most common coating for Neodymium magnets is Nickel + Copper + Nickel (Ni + Cu + Ni). This coating offers the magnet relatively good protection from corrosion and passive applications. If the magnet will be exposed to moisture or liquid then consider the use of an organic coating such as Epoxy. A hard wearing coating, Epoxy is suited to applications where the magnet will come under some friction or knocking.
Range and Tolerance
Magnets are readily available in Blocks, Discs, Cylinders & Rings. We specializes in the supply of short-run prototype magnets including Arc Segments, various magnetic orientations etc. If you need a magnet size that we don't carry in stock, submit a Design-a-Magnet enquiry for a quote on your custom magnet design.
Magnetic Properties
Neodymium magnets are offered in several different grades. The first section N30-54 has an operating temperature of up to 80 degrees. Most of our stock only goes up to N38. The second section, denoted with the "M" prefix after the grade has an operating temperature 100 degrees. After this the grades are "H", "SH", "UH" & "EH". In order for the magnet to withstand a higher operating temperature, during production more of the raw material PrNd is incorporated as these elements have a naturally occurring resistance to high temperatures.
Returns Policy
If you are not entirely satisfied with your purchase, we're here to help.
We have a 30 Day Returns policy at Frenergy Magnets. You may return your item within 30 days of receiving it to receive a refund.
The product/s must be unused and in the same condition you received them in. Please contact us at info@frenergy.com.au to initiate the returns process.
The buyer is responsible for the cost of returning the order.
